$161+ Cheap flights from Ontario to Billings (ONT - BIL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BIL
Sep 17 — Sep 241
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Billings with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to Billings
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Best
Last-minute
One-way
Cheapest flights from Ontario to BillingsExplore the most affordable flight options available from Ontario to Billings. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2026.
Explore the most affordable flight options available from Ontario to Billings. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2026.
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/95:15 pm -
1 stop4h 19m
Wed 9/165:20 am -
1 stop4h 42m
Deal found 8/14![Delta logo]()
$321
This Alaska Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:25 am -
1 stop6h 39m
Mon 10/197:41 am -
1 stop6h 35m
Deal found 8/13![Alaska Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:15 pm -
1 stop4h 19m
Tue 9/156:33 pm -
1 stop6h 14m
Deal found 8/14![Delta logo]()
$360
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/95:15 pm -
1 stop4h 19m
Sun 9/135:20 am -
1 stop4h 42m
Deal found 8/14![Delta logo]()
$371
This Expedia deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/117:59 pm -
1 stop14h 41m
Tue 9/226:14 am -
1 stop6h 02m
Deal found 8/14![Alaska Airlines logo]()
$380
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/95:15 pm -
1 stop4h 19m
Tue 9/156:33 pm -
2 stops23h 46m
Deal found 8/14![Delta logo]()
$392
This Alaska Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:12 am -
2 stops10h 37m
Wed 9/306:14 am -
1 stop6h 02m
Deal found 8/15![Alaska Airlines logo]()
$397
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:15 pm -
1 stop4h 19m
Sat 9/126:33 pm -
1 stop4h 31m
Deal found 8/14![Delta logo]()
$410
This Travelocity deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2211:13 am -
1 stop6h 39m
Sun 10/257:32 pm -
2 stops22h 33m
Deal found 8/16![Alaska Airlines logo]()
$417
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/125:15 pm -
1 stop4h 26m
Fri 9/185:20 am -
1 stop4h 42m
Deal found 8/14![Delta logo]()
$421
Best flights from Ontario to BillingsDiscover carefully curated flight deals from Ontario to Billings that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 18, 2026.
Discover carefully curated flight deals from Ontario to Billings that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 18, 2026.
This Alaska Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1511:13 am -
1 stop6h 39m
Mon 10/197:41 am -
1 stop6h 35m
Deal found 8/16![Alaska Airlines logo]()
$384
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/305:00 am -
1 stop7h 21m
Thu 9/35:07 am -
2 stops8h 05m
Deal found 8/15![United Airlines logo]()
$426
This Delta deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:04 pm -
1 stop3h 44m
Wed 9/165:20 am -
1 stop4h 42m
Deal found 8/15![Delta logo]()
$451
This Booking.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/53:07 pm -
1 stop19h 24m
Wed 9/97:29 pm -
1 stop16h 47m
Deal found 8/16![Alaska Airlines logo]()
$430
This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:00 am -
1 stop4h 07m
Sat 8/296:24 pm -
1 stop4h 59m
Deal found 8/13![Delta logo]()
$471
This Booking.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/207:12 am -
2 stops15h 17m
Sat 9/266:14 am -
2 stops12h 04m
Deal found 8/17![Alaska Airlines logo]()
$494
Last-minute flights from Ontario to BillingsDiscover last-minute flight deals from Ontario to Billings. Data last updated August 18, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Billings. Data last updated August 18, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/305:00 am -
1 stop7h 21m
Thu 9/35:07 am -
2 stops8h 05m
Deal found 8/15![United Airlines logo]()
$426
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:15 pm -
1 stop4h 19m
Tue 9/156:33 pm -
1 stop6h 14m
Deal found 8/14![Delta logo]()
$360
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:15 pm -
1 stop4h 19m
Sat 9/126:33 pm -
1 stop4h 31m
Deal found 8/14![Delta logo]()
$410
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/95:15 pm -
1 stop4h 19m
Wed 9/165:20 am -
1 stop4h 42m
Deal found 8/14![Delta logo]()
$321
This Booking.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:02 am -
1 stop11h 47m
Wed 9/167:29 pm -
1 stop16h 47m
Deal found 8/17![Alaska Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/95:15 pm -
1 stop4h 19m
Sun 9/135:20 am -
1 stop4h 42m
Deal found 8/14![Delta logo]()
$371
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/95:15 pm -
1 stop4h 19m
Tue 9/156:33 pm -
2 stops23h 46m
Deal found 8/14![Delta logo]()
$392
This United Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:56 pm -
2 stops7h 55m
Tue 9/155:00 am -
2 stops10h 01m
Deal found 8/14![United Airlines logo]()
$411
This Expedia deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/117:59 pm -
1 stop14h 41m
Tue 9/226:14 am -
1 stop6h 02m
Deal found 8/14![Alaska Airlines logo]()
$380
This Alaska Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:14 pm -
1 stop7h 15m
Wed 9/166:14 am -
1 stop6h 02m
Deal found 8/14![Alaska Airlines logo]()
$425
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/125:15 pm -
1 stop4h 26m
Sun 9/135:20 am -
1 stop4h 42m
Deal found 8/14![Delta logo]()
$421
This Alaska Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:12 am -
2 stops10h 37m
Wed 9/306:14 am -
1 stop6h 02m
Deal found 8/15![Alaska Airlines logo]()
$397
One-way flights from Ontario to BillingsSearch for one-way flight options from Ontario to Billings. Find affordable one-way fares based on user searches. Data last updated August 18, 2026.
Search for one-way flight options from Ontario to Billings. Find affordable one-way fares based on user searches. Data last updated August 18, 2026.
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/95:15 pm -
1 stop4h 19m
Deal found 8/17![Delta logo]()
$161
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:15 pm -
1 stop4h 19m
Deal found 8/17![Delta logo]()
$200
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:56 pm -
2 stops7h 55m
Deal found 8/17![United Airlines logo]()
$206
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/125:15 pm -
1 stop4h 26m
Deal found 8/17![Delta logo]()
$211
This Booking.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:07 pm -
1 stop7h 22m
Deal found 8/16![Alaska Airlines logo]()
$236
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/111:18 pm -
1 stop6h 42m
Deal found 8/17![United Airlines logo]()
$251
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/75:00 am -
1 stop7h 21m
Deal found 8/17![United Airlines logo]()
$279
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/89:01 am -
2 stops10h 59m
Deal found 8/17![United Airlines logo]()
$284
This Booking.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:56 pm -
1 stop15h 29m
Deal found 8/16![Alaska Airlines logo]()
$312
This Alaska Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:12 am -
2 stops27h 28m
Deal found 8/17![Alaska Airlines logo]()
$378
This Booking.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/93:14 pm -
1 stop7h 15m
Deal found 8/16![Alaska Airlines logo]()
$391
Find flight deals from Ontario to Billings
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Billings (BIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $321 (Alaska Airlines) |
One-way from | $161 (Delta) |
Popular in | April |
Cheapest in | February |
Average price | $573 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Billings that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 18, 2026.
Use the filters below to find and compare flights from Ontario to Billings that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioBillings
ONT Ontario - BIL Billings Logan Intl
ONTBIL
Ontario
Thu 10/15
11:13 am-6:52 pm
1 stop6h 39m
Billings Logan Intl
Mon 10/19
7:41 am-1:16 pm
1 stop6h 35m
$384
OntarioBillings
ONT Ontario - BIL Billings Logan Intl
ONTBIL
Ontario
Sun 8/30
5:00 am-1:21 pm
1 stop7h 21m
Billings Logan Intl
Thu 9/3
5:07 am-12:12 pm
2 stops8h 05m
$426
OntarioBillings
ONT Ontario - BIL Billings Logan Intl
ONTBIL
Ontario
Sat 9/5
3:07 pm-11:31 am
1 stop19h 24m
Billings Logan Intl
Wed 9/9
7:29 pm-11:16 am
1 stop16h 47m
$430
Quickest round-trip
OntarioBillings
ONT Ontario - BIL Billings Logan Intl
ONTBIL
Ontario
Thu 9/10
1:04 pm-5:48 pm
1 stop3h 44m
Billings Logan Intl
Wed 9/16
5:20 am-9:02 am
1 stop4h 42m
$451
OntarioBillings
ONT Ontario - BIL Billings Logan Intl
ONTBIL
Ontario
Sat 8/29
6:00 am-11:07 am
1 stop4h 07m
Billings Logan Intl
Sat 8/29
6:24 pm-10:23 pm
1 stop4h 59m
$471
OntarioBillings
ONT Ontario - BIL Billings Logan Intl
ONTBIL
Ontario
Sun 9/20
7:12 am-11:29 pm
2 stops15h 17m
Billings Logan Intl
Sat 9/26
6:14 am-5:18 pm
2 stops12h 04m
$494
Cheapest one-way
OntarioBillings
ONT Ontario - BIL Billings Logan Intl
ONTBIL
Ontario
Wed 9/9
3:14 pm-11:29 pm
1 stop7h 15m
$161
Quickest one-way
OntarioBillings
ONT Ontario - BIL Billings Logan Intl
ONTBIL
Ontario
Thu 9/10
1:04 pm-5:53 pm
1 stop3h 49m
$161
OntarioBillings
ONT Ontario - BIL Billings Logan Intl
ONTBIL
Ontario
Wed 9/9
1:56 pm-10:51 pm
2 stops7h 55m
$206
OntarioBillings
ONT Ontario - BIL Billings Logan Intl
ONTBIL
Ontario
Tue 8/25
3:07 pm-11:29 pm
1 stop7h 22m
$236
Showing 1-10 of 15 resultsSorted by cheapest first
Compare providers for flights from Ontario to Billings
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Billings in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ontario-Billings flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Billings flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Billings flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Billings flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Billings flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Ontario to Billings
Have a flexible travel schedule? Discover the best time to fly to Billings from Ontario with our price prediction graph.
ONT-BIL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Reviews of airlines servicing Billings
Get insights into the airlines that provide service to Billings. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Billings. Reviews last updated August 18, 2026.
Read through reviews of airlines operating flights from Ontario to Billings, such as Alaska Airlines,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Boarding
8.1
Entertainment
7.0
Food
7.0
Comfort
7.8
Overall
7.9
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Boarding
8.1
Entertainment
7.0
Food
7.0
Comfort
7.8
Overall
7.9
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Boarding
8.1
Entertainment
7.0
Food
7.0
Comfort
7.8
Overall
7.9
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Boarding
8.1
Entertainment
7.0
Food
7.0
Comfort
7.8
Overall
7.9
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Related info for your journey
Find useful and relevant information for your journey from Ontario to Billings. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
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Complete your trip
Flights by cabin class
Other flight options
Other flights from Ontario
Popular flights
Alternative routes for Ontario to Billings
See prices for flight routes from nearby airports that may be better suited for you.
Other flights to Billings
Explore flights to Billings departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 18, 2026.
Complete your trip
Complete your trip to Billings by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Billings by cabin class
Find flights from Ontario to Billings, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Billings flights
Browse other Ontario and Billings flight options. Last updated on August 18, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on August 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Ontario to Billings
Discover the top 3 airlines that operate flights from Ontario to Billings. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$269 | Average$619 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$270 | Average$394 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$284 | Average$379 | FlexibilityNo cancel fee | On-timeN/A |